Portion of a socket



FIG. 1 is a perspective view of the portion of a socket showing my new design;

FIG. 2 is a front elevational view thereof (the right side, the left side, the rear elevational views are a mirror image of the front elevational view);

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a cross sectional view, for clarity purpose only, to show the contour of the portion of a socket showing my new design.

The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a portion of a socket, as shown and described. 